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4h
revised A base generates an unique topology?
added 48 characters in body; edited title
5h
revised Solution to differential equation is defined on $\mathbb R$
added 1 character in body; edited title
12h
comment Advantage of accepting non-measurable sets
At least you admit that there's an error with this answer. If only you chose to correct it days ago when this was first pointed out to you. Of course, I am not so naive as to think that you will ever correct this answer.
12h
comment Limit vs interior definition of continuity
Whilst the information at this link may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
13h
comment Advantage of accepting non-measurable sets
Comments are not for extended discussion; this conversation has been moved to chat.
14h
reviewed Reject Calculate $\int_{0}^{1} \frac{x^3}{\sqrt{1+x^4}}dx$
14h
revised Calculate $\int_{0}^{1} \frac{x^3}{\sqrt{1+x^4}}dx$
moved terrible title to body, gave a (slightly) better title
14h
revised Show that if $(X,d)$ is compact then, every open covering of $X$ has a Lebesgue number.
deleted 4 characters in body; edited tags
18h
comment The set of ordinals $< \alpha$ of a given cofinality $\kappa< \text{cf}(\alpha)$ is stationary
Perhaps you could identify the source of this proof.
1d
revised Is the Sorgenfrey Line second countable?
deleted 27 characters in body; edited tags
2d
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
added 39 characters in body
2d
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
deleted 15 characters in body
2d
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
problem statement quoted verbatim (from 6th edition)
2d
revised Mixed strategy nash equilbrium
rolled back to a previous revision
May
18
comment Set of limit points of a subset of a Hausdorff space is closed.
@ᴇʏᴇs Recall that "$x$ is a limit point of $A$" means that "every (open) neighbourhood $U$ of $x$ contains a point of $A$ different from $x$"; in more symbols "$U \cap ( A \setminus \{x\} ) \neq \varnothing$ for every (open) neighbourhood $U$ of $x$." Then "$x$ is not a limit point of $A$" means that "$U \cap ( A \setminus \{ x \} ) = \varnothing$ for some (open) neighbourhood $U$ of $x$." If $U \cap ( A \setminus \{ x \} ) = \varnothing$, then either $U \cap A = \varnothing$ (if $x \notin A$) or $U \cap A = \{ x \}$ (if $x \in A$); so in any case $U \cap A \subseteq \{ x \}$.
May
18
revised Show that $\mathbb{R}$ is a disjoint union of $\mathfrak{c}$ sets of cardinal $\mathfrak{c}$
Added specific mention of what c means
May
18
revised Polynomials $f$ with integer coefficients such that $f(x) \geq 0$ on $[-2,2]$ and $f(x) \leq \frac{1}{1+x}$ on $(-1,2]$
deleted 1 character in body; edited title
May
18
revised Minimal polynomial of $\sqrt{2} + \sqrt{3}$ over $\Bbb{Q}(\sqrt{6})$
added 17 characters in body; edited tags; edited title
May
18
comment How to evaluate solid angle subtended by a segmented circle?
Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
May
18
revised Calculate the intersection points of two ellipses
added 132 characters in body; edited title